Syntax to build a dictionary in a Foreach SOP loop

[AntoineSfx]

I'm trying to iterate over named primitives to create a dictionary that hold, say the bounding boxes of each group of primitives.

What is the correct syntax ?  I always end up with a dictionary with one element and it's actually in feedback mode..

 

For now, I managed to reimplement it in one detail wrangle like this:

string names[] = uniquevals(0,"prim","name");
s[]@names=names;

foreach(string s; s[]@names) {
if (strlen(s)==0) continue; // skip empty groups
string gn = sprintf("@name==%s",s);
int prims[] = expandprimgroup(0,gn);
vector size= getbbox_size(0,gn);
string ssz = sprintf("%f, %f, %f", size.x, size.y, size.z);

d@infos[s]=gn;
d@primCount[s]=len(prims);
d@sizes[s]=ssz;
}

 

But I'm still looking for the reason why the dictionary doesn't seem to like the assignation of its keys in a feedback loop.

Edited June 8 by AntoineSfx

[fencer]

Don't see that uniquevals works to create sets, we should see a,b,c in foreach, right?

names >> [ a0, a1, a2, a3, b0, b1, c0, c1, c2, c3 ]
infos >> {"a0": "@name==a0", "a1": "@name==a1", "a2": "@name==a2", "a3": "@name==a3", "b0": "@name==b0", "b1": "@name==b1", "c0": "@name==c0", "c1": "@name==c1", "c2": "@name==c2", "c3": "@name==c3"}

 

[AntoineSfx]

2 hours ago, fencer said:

Don't see that uniquevals works to create sets, we should see a,b,c in foreach, right?

names >> [ a0, a1, a2, a3, b0, b1, c0, c1, c2, c3 ]
infos >> {"a0": "@name==a0", "a1": "@name==a1", "a2": "@name==a2", "a3": "@name==a3", "b0": "@name==b0", "b1": "@name==b1", "c0": "@name==c0", "c1": "@name==c1", "c2": "@name==c2", "c3": "@name==c3"}

 

 I don´t undertstand what you are asking.